#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>
#include<cmath>

using namespace std;

int main()
{
	int n;
	cin >> n;
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < n; j++)
		{
			if (abs(i - n / 2) + abs(j - n / 2) > n / 2)
			{
				cout << ' ';
			}
			else
			{
				cout << '*';
			}
		}
		cout << endl;
	}
	return 0;
}